LG LM-220WE1-TLD3 Service manual

SPECIFICATION

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(◆) Preliminary Specification
( ) Final Spec ific at i on

LM220WE1

Liquid Crystal Display

Product Specification

FOR

APPROVAL

Title

BUYER

MODEL

www.jxlcd.com

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SIGNATURE DATE

/

/

22” WSXGA+ TFT LCD

SUPPLIER LG.Philips LCD CO., Ltd.

*MODEL

SUFFIX TLD3

*When you obtain standard approval,

please use the above model name without suffix

APPROVED BY

K.G. Park / G.Manager

REVIEWED BY

S.J. So / Manager [C]

S.Y. An / Manager [M]

H.S. Lee / Manager [P]

LM220WE1

DATE

/

Please return 1 copy for your confirmation
With your signature and comments.

Ver. 0.1 Jun. 13. 2007

PREPARED BY

J.H. Ji / Engineer

Product Engineering Dept.

LG. Philips LCD Co., Ltd

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Product Specification

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Contents

LM220WE1

Liquid Crystal Display

PageITEMNo

COVER
CONTENTS

GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS3-1
INTERFACE CONNECTIONS3-2
SIGNAL TIMING SPECIFICATIONS3-3
SIGNAL TIMING WAVEFORMS3-4
COLOR INPUT DATA REFERNECE3-5

POWER DIP CONDITION3-6

V

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LCD

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POWER SEQUENCE3-7
OPTICAL SFECIFICATIONS4
MECHANICAL CHARACTERISTICS5

1
2

3RECORD OF REVISIONS
4
5
6
6
9

15
16

17
18
19
20
24

RELIABILITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2

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27
28
28
28
29
29
29

30PRECAUTIONS9

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Product Specification

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RECORD OF REVISIONS

Preliminary Specification of LM220WE1-TLD3.-Jun. 13. 20070.1

LM220WE1

Liquid Crystal Display

DESCRIPTIONPageRevision DateRevision No

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LM220WE1

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Liquid Crystal Display

Product Specification

1. General Description

LM220WE1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally White mode. It has a 22 inch diagonally measured
active display area with WSXGA+ resolution (1050 vertical by 1680 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the brightness of the sub-pixel color is determined wi th a 8-bit gray scale signal for each dot,
thus, presenting a palette of more than 16,7M colors with A-FRC(Advanced Frame Rate Control).
It has been designed to apply the 8Bit 2 port LVDS interface.
It is intended to support displays where high brightness, super wide viewing angle,
high color saturation, and high color are important.

RGB, Dclk, DE
Hsync, Vsync

(LVDS 2 port)

(+5V)

V

LCD

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V

Lamp

V

Lamp

General Features

CN1

(30pin)

CN2, 3(2PIN)
CN4, 5(2PIN)

Timing Control

Block

Power Circuit Block

21.995 inches(558.673mm) diagonal (Aspect ratio 16:10)Active Screen Size

493.7(H) x 320.1 (V) x 16.5(D) mm (Typ.)Outline Dimension

0.282mm x 0.282mmPixel Pitch
1680 horiz. By 1050 vert. Pixels RGB strip arrangementPixel Format
16,7 M colorsColor Depth
300 cd/m2 (Center 1 point, Typ.)Luminance, White
Total 29.25 Watt(Typ.) (4.370 Watt@VLCD, 24.88 Watt@300cd/[LAMP=7.5mA])Power Consumption

2800 g (Typ.)Weight
Transmissive mode, Normally WhiteDisplay Operating Mode

Hard coating(3H) & Anti-glare treatment of the front polarizerSurface Treatment

Source Driver Circuit

S1680S1

Gate Driver circuit

G1

TFT-LCD Panel

(1680 × 1050 pixels)

G1050

Backlight Assembly(4 CCFL)

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LM220WE1

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Liquid Crystal Display

Product Specification

2. Absolute Maximum Ratings

The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.

Table 1. ABSOLUTE MAXIMUM RATINGS

Parameter Notes

Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity

Note : 1. Temperature and relative humidity range are shown in the figure below.

Wet bulb temperature should be 39 °C Max, and no condensation of water.

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Symbol

Values

MaxMin
+5.5-0.3VLCD

500TOP
60-20TST

90%

60

60%

Units

°C
°C

DC

at 25 ± 2 °CV

1
1
1%RH9010HOP
1%RH9010HST

Wet Bulb

50

Temperature [C]

40

30

20

10

0

10 20 30 40 50 60 70 800-20

Dry Bulb Temperature [C]

Ver. 0.1 Jun. 13. 2007

40%

10%

Storage

Operation

Humidity [(%)RH]

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LM220WE1

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Liquid Crystal Display

Product Specification

3. Electrical Specifications
3-1. Electrical Characteristics

It requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and
liquid crystal. The second input power for the CCFL, is typically generated by an inverter. The inverter is an
external unit to the LCDs.

Table 2_1. ELECTRICAL CHARACTERISTICS

Parameter Symbol

MODULE :

ILCDPower Supply Input Current

Note :

1. The specified current and power consumption are under the V
whereas mosaic pattern(8 x 6) is displayed and f

2. The current is specified at the maximum current pattern.

3. The duration of rush current is about 2ms and rising time of power Input is 500us ± 20%.(min.).

White : 255Gray
Black : 0Gray

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is the frame frequency.

V

Maximum current pattern

Values

MaxTypMin

Vdc5.55.04.5VLCDPower Supply Input Voltage

=5.0V, 25 ± 2°C,fV=60Hz condition

LCD

NotesUnit

1mA1005874­2mA14221094­1Watt5.0254.370-PLCDPower Consumption
3A3--IRUSHRush current

Mosaic Pattern(8 x 6)

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Black Pattern

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Table 2_2. ELECTRICAL CHARACTERISTICS

LM220WE1

Liquid Crystal Display

Parameter Symbol

LAMP :

at 25 °C

at 0 °C
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time

Note : The design of the inverter must have specifications for the lamp in LCD Assembly.

The performance of the Lamp in LCM, for e xample life time or brightness, is e xtremely influenced by

the characteristics of the DC-AC inverter. So all the parameters of an inverter should be carefully

designed so as not to produce too much leakage current from high-voltage output of the inverter.

When you design or order the inverter, please make sure unwanted lighting caused by the mismatch

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of the lamp and the inverter (no lighting, flicker, etc) ne ver occurs. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in you instrument.

※ Do not attach a conducting tape to lamp connecting wire.

If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter
has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.

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Values

MaxTypMin

1000830810VBLOperating Voltage

8.07.53.0IBLOperating Current

1250
1550

RMS

RMS

V

RMS

V

RMS

NotesUnit

1, 2V

1mA

1, 3VsEstablished Starting Voltage

4kHz806040fBL

1, 5Min3Ts

6W27.424.9PBL

1, 7Hrs50,000

1. Specified values are for a single lamp.

2. Operating voltage is measured at 25 ± 2°C. The variance of the voltage is ± 10%.

3. The voltage above V
(Inverter open voltage must be more than lamp starting voltage.)

Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current.

4. Lamp frequency may produce interface with horizonta l synchronous frequency and as a result this may

cause beat on the display. Therefore lamp frequency shall be as away possible from the horizontal

synchronous frequency and from its harmonics in order to prevent interference.

5. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.

T

is the time required for the brightness of the center of the lamp to be not less than 95%.

S

6. The lamp power consumption shown above does not include loss of external inverter.

The used lamp current is the lamp typical current. (P

7. The life is determined as the time at which brightness of the lamp is 50% compared to that of initial

value at the typical lamp current on condition of continuous operating at 25 ± 2°C.

Ver. 0.1 Jun. 13. 2007

should be applied to the lamps for more than 1 second for start-up.

S

= VBLx IBLx N

BL

Lamp

)

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LM220WE1

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Liquid Crystal Display

Product Specification

8. The output of the inverter must have symmetrical(negative and positive) voltage waveform and

symmetrical current waveform (Unsymmetrical ratio is less than 10%). Please do not use the inverter
which has unsymmetrical voltage and unsymmetrical current and spike wave.
Requirements for a system inverter design, which is intended to have a better display performance, a

better power efficiency and a more reliable lamp, are following.
It shall help increase the lamp lifetime and reduce leakage current.

a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.

* Inverter output waveform had better be more similar to ideal sine wave.

* Asymmetry rate:

I p

| I

p

–I –p| / I

rms

x 100%

I -p

9. The inverter which is combined with this LCM, is highly recommended to connect coupling(ballast)
condenser at the high voltage output side. When you use the inverter which has not coupling(ballast)
condenser, it may cause abnormal lamp lighting because of biased mercury as time goes.

10.In case of edgy type back light with over 4 parallel lamps, input current and voltage wave form should
be synchronized

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* Distortion rate

I

(or I –p) / I

p

rms

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LM220WE1

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Liquid Crystal Display

Product Specification

3-2. Interface Connections

Interface chip must be used LVDS, part No. SN75LVDS83 (Tx, Texas Instrument) or compatible.
This LCD employs a interface connection, a 30 pin connector is used for the module electronics interface.
Four 2pin connectors are used for the integral backlight system. The electronics interface connector is
a model MDF76LBRW-30S-1H manufactured by HIROSE or FI-XB30SRL-HF11 manufactured by JAE.
The pin configuration for the connector is shown in the table 3 and the signal mapping with LVDS transmitter
is shown in the table 4.

Table 3. MODULE CONNECTOR(CN1) PIN CONFIGURATION

Pin No

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

Symbol Description

RxO0­RxO0+
RxO1­RxO1+
RxO2­RxO2+
GND
RxOC­RxOC+
RxO3­RxO3+

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RxE0­RxE0+
GND
RxE1­RxE1+
GND
RxE2­RxE2+
RxEC­RxEC+
RxE3­RxE3+
GND
NC
NC
PWM_OUT
VCC
VCC
VCC

Minus signal of odd channel 0 (LVDS)
Plus signal of odd channel 0 (LVDS)
Minus signal of odd channel 1 (LVDS)
Plus signal of odd channel 1 (LVDS)
Minus signal of odd channel 2 (LVDS)
Plus signal of odd channel 2 (LVDS)
Ground
Minus signal of odd clock channel (LVDS)
Plus signal of odd clock channel (LVDS)
Minus signal of odd channel 3 (LVDS)
Plus signal of odd channel 3 (LVDS)
Minus signal of even channel 0 (LVDS)
Plus signal of even channel 0 (LVDS)
Ground
Minus signal of even channel 1 (LVDS)
Plus signal of even channel 1 (LVDS)
Ground
Minus signal of even channel 2 (LVDS)
Plus signal of even channel 2 (LVDS)
Minus signal of even clock channel (LVDS)
Plus signal of even clock channel (LVDS)
Minus signal of even channel 3 (LVDS)
Plus signal of even channel 3 (LVDS)
Ground
No Connection
No Connection
PWM_OUT signal for control burst frequency of Inverter
Power Supply +5.0V
Power Supply +5.0V
Power Supply +5.0V

First Pixel data

Second Pixel data

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User Connector Diagram

MDF76LBRW-30S-1H(Hirose)

FI-XB30SRL-HF11 (JAE)

CN1

120

#30#1

LM220WE1

Liquid Crystal Display

1’st signal pairs

2’nd signal pairs

PWM_out

Input connector

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Notes: 1. All GND(ground) pins should be connected together and should also be

connected to the LCD’s metal frame.

2. All V

(power input) pins should be connected together.

CC

#1 #30

Back Light

Rear view of LCM

Power(5V)

PCB

Components

3. All NC pins should be separated from other signal or power.

4. PWM_OUT signal controls the burst frequency of a inverter.
This signal is synchronized with vertical frequency,
it’s frequency is 3 times of vertical frequency, and it’s duty ratio is 50%.
If you don’t use this pin, it is no connection.

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